The D series Multistage Ring Section Centrifugal Water Pump is a utility-grade, high-pressure, ring section pump with heavy duty, segmental ring, diffuser design. Axial thrust balance device with stacked rotor construction. Suitable for boiler feed pump and high building, long distance water transferring.

It is a radially split, segmented casing, multistage pump designed with modular interstage components. These identical components can be assembled to produce pumps of varying numbers of stages, hydraulics, materials, and configurations to meet the customer’s specific requirements. Its multiple suction nozzle and discharge nozzle orientations allow the D to adapt to multiple piping installations and provide the piping designer with flexibility in plant layout.

Structure Design

Horizontal, radially split, ring section pump with radial impellers, single or double flow entry, multistage. The stages are sealed against each other by O rings or by metallic sealing faces and fastened by tie bolts.

Balancing Device
Thrust compensation by the hydraulic balancing device located at the discharge side. Balancing by disc or double piston.

Shaft Seal
Packed stuffing box uncooled or cooled.

Mechanical seal uncooled, with jacket cooling, seat ring cooling, injection or circulation.

The shaft is provided with exchangeable shaft sleeve in the shaft seal area.

Other Features

* High efficiency, low NPSH impellers to match customer needs are used for all stages, providing modularity, top efficiency and ideal suction performance.
* Double volute a last stage reduces the radial thrust and increases overall efficiency.
* Replaceable stationary PEEK wear parts used to increase efficiency and reduce main-tenance.
* Product lubricated bearing at both DE and NDE to make the pump compact, reliable and easy to maintain.

Parameters